Improvement in stop and waste cocks



W. PoRTEoU's & A@ B. RON-EY.

sToP AND WASTE-coms.

W @y Xmxtm UNITED STATES PATENT (DEEICEo WILLIAM PORTEOUS AND ALEXANDER B. RONEY, OF PITTSBURG, PA.

` IMPROVEMENT IN STOP AND WASTE COCl-(S.

Specification forming part of Letters Patent No. 195,168, dated September 11, 1877 application filed June 9, 1877.

To all whom it may concern Be it known that we, WILLIAM PoRTEoUs and ALEXANDER B. RoNEY, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stop and Waste (Jocks and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specifica tion, in which- Figure l is a vertical longitudinal section, showing valve open and Waste closed. Fig. 2 is a similar view, showing valve closed and waste open. Fig. 3 is a detail section, showing the arrangement of main and secondary stems and valve.

This invention relates to stop and waste cocks of that class in which the valve opens and closes by the reciprocation of the stem, caused by the engagement of a threaded collar on the stem with the threaded chamber on the cock and consists in the construction and combination of parts, substantially as hereinafter fully described and claimed.

The drawings show a stop-cock of the above class having our improvements.

A designates the threaded body vor chamber; B, the valve; b, its stem, having the threaded collar or enlargement c. The chambeil or body A is rabbeted on the interior of its end for the seating of a metallic washer, m, surrounding the stem. Outside vthis a packing, a, is placed, and all secured by acap, C, screwing down on the body A, as shown; but between the cap C and packing a comes the flange of a movable waste-water chamber, D, of peculiar form. In the face of its ange an annular recess is cut to receive a packing, d, which closely hugs the stem b. The wastespace s, in chamber D, is made continuous around the stem, and communicates with the exterior through an opening, e, to which an ordinary waste-tube may be applied. Thus constructed, the chamber D may be revolvedto any degree, in order that the waste-tube may be applied in any direction.

In chamber D, above the Waste-space, a third packing, f, is inserted, and a stufiingbox screwed down on top of it.

The collar or enlargement c of stem b is perforated or grooved, or the inner face of body Ais grooved orchanneled, to afford a constant open communication between the two ends of collar c. Above the collar c the stem b is slotted, grooved, or otherwise channeled for a short distance.

The operation is as follows: Suppose the cock is open, as in Fig. 1.-` In" this position, though water may pass the collar c, it can go no farther than packing a, because the act of opening has withdrawn fthe stem b till its channel no longer lies below the packing a and d and ring m, but is above them, and consequently no Water can find its way from body A to waste-chamber D; but, now, in closing the cock the valve-stemt is advanced into the body till, immediately before reaching the fullc1osed position, the channel of the stem appears below the ring m, when the waste is open from body A to chamber D, and the water is prevented from leaking beside the stem by the packing f of stuffing-box inserted at outer end of chamber D. In again opening the cock, a quarter-turn of the stem eEectually closes the waste, presenting the solid metal of the stem to the pressure of the water.

The mechanism is simple and possesses many advantages. It has no spring, and consequently if it operates once it does so always, and cannot fail to work. This is not the case when a spring or cushion is used, as it weakens through lapse of time, requires constant attention, and, owing to the varying pressure of water in pipes, the spring is apt to work or yield at the Wrong time. Rubber springs oxidize or rot and become useless, particularly when hot water is used; but our device, being all brass, except the usual necessary packings, is not open to any such objections. Should the waste get out of order, or new packing be required in Wastechamber, everything except the valve may be taken out and repaired without the disagreeable necessity ot' closing the street-valve, and thus no annoyance arises. By tightening the cap when the packings become Worn, they are compressed and spread, so as to be as good as new.

In addition to the above functions, it is desirable that the wast-e should not discover till the valve is completely shut, and that the valve should not open till the waste is closed.

as to permit a slight longitudinal motion of" stem h in. referencel to` pin: t; and- We1 place largement c, between it and the valve B. Now, if the valve be shut, in opening no efect is. produced on the valve for the first halfturn of stemv b, becanse thefwide groove in stein hA allows the stemy Irtolnise a little before pini?? strikes the upper side of? the groove,an.d the valve is meanwhile held tozitsseat by the elasticity of the; spring s'. This half -turn closes the waste, and the valve openson fm:- ther turning of stem b. In closing, the 0pposite result; is producedthat is, thespring s causes thevalve B to strike its seat` before the,V waste can discover, after which` a. haltturn of stem-.b brings the stein b1 rdown solid on the valve and opensl the waste.

The spring,i being, operative during on-.lyv anr instant of time in opening or closin-g,.isi not open to the objections above, cited, as they are tobe understood: asthe essential element in opening andy closing the. waste; but here thespring is applied totheVal-ve for a difteren-t and secondary purpose.

W'ev claim- 1.. In combination with the body A and Waste-chamber D, the reciprocating stem b, having the threaded enlargement c, and slotted, grooved, or channeled above the enlargefment,I substantially as described, to furnish outlet from body A to chamber D.

2. In combination, the movable chamber D,

recessed, andi having a 'ange ,projecting be- Y tween the body and its cap, and the packing d, with the body A and stem b, substantially as andl for the purposes described. a spiral spring, s', around the neck of theen- 3. In that class of stop-cocks in which the valve is lowered to its seat by a threaded enlargement on its stem engaging with the threaded body of thiolcock, a waste-passage constructedv in. the stem or its. enlargement, substantially as shown.; leaving' a permanent passage-way for the wastewater from the water-way of theivallve-shank to that portionof the: body: above said enlargement;

4i. The conrbtnmaionu ot" main. stem b with stem; lupin) fi, and spring s', the stem h having a: circumferential: groove wider than the head: ot' pin t', substantially as described.

In(x testimony that we. claim: the foregoing we, have` hereunto set our hands thisi 18th day of May, 1877.

WILLIAM PomEoUs. anexa. B.. Bonnin Witnesses:y

Trios. BINGHAM, THos. J .,MCTIGHE; 

